[Doc] Rewrite checklist & update docs. (#360)

Signed-off-by: Alicia Wang <115451386+congw729@users.noreply.github.com>
Signed-off-by: Alicia <115451386+congw729@users.noreply.github.com>
Signed-off-by: Hongsheng Liu <liuhongsheng4@huawei.com>
Co-authored-by: Hongsheng Liu <liuhongsheng4@huawei.com>

docs/contributing/tests/tests_style.md

@@ -1,4 +1,4 @@
-# vLLM-Omni Test File Structure and Style Guide
+# Test File Structure and Style Guide
 
 To ensure project maintainability and sustainable development, we encourage contributors to submit test code (unit tests, system tests, or end-to-end tests) alongside their code changes. This document outlines the guidelines for organizing and naming test files.
 
@@ -261,8 +261,8 @@ def test_video_to_audio(omni_runner: type[OmniRunner], model: str) -> None:
         assert has_audio
 ```
 
-## Checklist before submit your test files:
+## Checklist before submitting your test files
 
-1. The file is saved in a suitable places and the file name is clear.
-2. The coding style matches the requirements.
-3. For e2e omni model tests, specify the
+1. The file is saved in an appropriate place and the file name is clear.
+2. The coding style follows the requirements outlined above.
+3. For e2e model test, please ensure the test is configured under the `./buildkite/` folder.